ssh proxy connection used to work with Firefox, now doesn't

[Chris Green]

OK, I have used the following command:-

    ssh -fC2qTnN -D 1080 chris at isbd.uk

... and it results in exactly the same error as I originally reported.
So I don't think the port number matters and the certificates at
isbd.uk are up to date.

As I said I'm pretty certain it's something more that Firefox is now
demanding, but I don't know what.

Thanks for your reply, just bouncing ideas back and forth can often
sort this sort of thing out.

-- 
Chris Green